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Will the Republican Party candidate win the first round of the 2026 Maine Senate election by 3%-6%? is currently being traded on 2 exchanges: Polymarket and PredictIt. The best Yes price right now is 36% on PredictIt, and the best No is 93% on Polymarket. A cross-exchange arbitrage opportunity is currently live with an estimated 28.5% net return. Combined 24-hour volume across these markets is 7.7K contracts.
Best Yes
36%
PredictIt
Best No
93%
Polymarket
Cross-Source Spread
29¢
Source Count
2
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| Source | Yes | No | Change | Volume 24h | Total Volume | Open Interest | Liquidity |
|---|---|---|---|---|---|---|---|
| Polymarket | 7% | 93% ★ | -47d | 7.7K | 9.2K | 31.9K | High |
| PredictIt | 36% ★ | 64% | -3 | — | — | — | Low |
Will the Republican Party candidate win the first round of the 2026 Maine Senate election by 3%-6%?
Which party will win the 2026 US Senate election in Maine? — Republican (Collins)
Buy YES on
Polymarket
7¢
Buy NO on
PredictIt
64¢
Total Cost
71¢
Gross Profit
29¢
Est. Fees
8.74¢
Net Profit
20.26¢
Return
28.5%
Disclaimer: Arbitrage calculations are estimates based on publicly listed fees. Actual fees, slippage, withdrawal timing, and market movement may affect realized returns. This is not financial advice. Always verify current fee schedules on each exchange before trading.
| Exchange | Trading Fee | Profit Fee | Withdrawal Fee | Notes |
|---|---|---|---|---|
| Polymarket | 2% | None | None | Trading exchange |
| PredictIt | None | 10% | 5% | Trading exchange |
Polymarket — Will the Republican Party candidate win the first round of the 2026 Maine Senate election by 3%-6%?
The 2026 first round of the Maine Senate election is currently expected to be held on November 3, 2026. This market will resolve according to the margin of victory between the top two candidates in the specified election. The "margin of victory" is defined as the absolute difference between the percentages of valid votes received by the first-place and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election. For purposes of this market, candidates nominated by the Democratic & Republican Parties will represent the options for "Democrat" and "Republican," respectively. Independent candidates will not represent options for either party. The candidates may be named in the contract for the convenience of traders. In the event that any named candidate is replaced as the nominee of their respective party prior to election day, the name in the contract will be updated and the market will resolve based on the replacement nominee of the party. If the reported value falls exactly between two brackets, then this market will resolve to the higher margin bracket. If two or more candidates tie for the most valid votes in this election, and the tie is between two candidates listed, this market will resolve to the lowest margin bracket for the candidate whose ballot-listed last name comes first in alphabetical order. If the tie is between a listed candidate and an unlisted candidate, this market will resolve to the lowest margin bracket for the listed candidate. If the tie is between two or more unlisted candidates, this market will resolve to "Other." If the listed candidate is represented in this market group as "Republican" or "Democrat" their ballot-listed last name will still be used for tiebreaking. This market will resolve based on the official vote count once the count has been made official. If the election results are not known definitively by June 30, 2027, 11:59 PM ET, this market will resolve to "Other". If a recount is initiated before the vote total has been made official, the market will remain open until the recount is completed and the vote is made official. The primary resolution source for this market will be the official results of the 2026 Maine Senate election as published by the state electoral authority responsible for certifying the results of the election; however, an overwhelming consensus of credible reporting may also be used.
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